A condition wherin an individual (usually female, though not always) has an uncontrollable urge to fall asleep while engaged in sexual congress with a guy who claims to be Spanish. This is a dangerous condition, which can sometimes result in the sufferer to receive an unexpected dirty sanchez.

Hey, how was the party last night?

Not so great--I got food poisoning from the "Spanish" tortilla, and ended up with a bout of Marcolepsy. I need a shower. And some bleach.